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lemniscate of bernoulli
释义
lemniscate of Bernoulli
lemniscate of Bernoulli
[
lem′nis·kət əv ber′nü·ē
]
(mathematics)
The locus of points (
x,y
) in the plane satisfying the equation (
x
2
+
y
2
)
2
=
a
2
(
x
2
-
y
2
) or, in polar coordinates (
r
,θ), the equation
r
2
=
a
2
cos 2θ.
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